EP0332207A2 - Procédé et dispositif d'accumulation de feuilles détachées provenant d'un dispositif de séparation de feuilles - Google Patents

Procédé et dispositif d'accumulation de feuilles détachées provenant d'un dispositif de séparation de feuilles Download PDF

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Publication number
EP0332207A2
EP0332207A2 EP89104272A EP89104272A EP0332207A2 EP 0332207 A2 EP0332207 A2 EP 0332207A2 EP 89104272 A EP89104272 A EP 89104272A EP 89104272 A EP89104272 A EP 89104272A EP 0332207 A2 EP0332207 A2 EP 0332207A2
Authority
EP
European Patent Office
Prior art keywords
film
roller
transport
winding
take
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89104272A
Other languages
German (de)
English (en)
Other versions
EP0332207A3 (fr
Inventor
Siegfried Dippon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebrueder Schmid GmbH and Co
Original Assignee
Gebrueder Schmid GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Schmid GmbH and Co filed Critical Gebrueder Schmid GmbH and Co
Publication of EP0332207A2 publication Critical patent/EP0332207A2/fr
Publication of EP0332207A3 publication Critical patent/EP0332207A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/64—Article switches or diverters directing the components of composite articles into separate paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/16—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/413—Supporting web roll
    • B65H2301/4134—Both ends type arrangement
    • B65H2301/41342—Both ends type arrangement shaft transversing the roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/56—Flexible surface
    • B65H2404/561—Bristles, brushes

Definitions

  • the invention relates to a method and a device for collecting film waste in a film detaching device in which cover or protective films on plate-shaped carriers are removed.
  • the detached films are fed from a film transport device to a film collecting device in a substantially smooth state.
  • the film release devices mentioned, in which the collecting device according to the invention is used, are known in many different ways. Most of these detaching devices have in common that the film is removed by a film transport device from the detaching area of the film detaching device and fed to a waste container.
  • Such a method and device is known, for example, from EP-A 2 32 841, in which the film is fed to a simple container via the film transport device.
  • a vacuum can be applied to the bottom of the container so that the cover films collected can be compressed in the container.
  • the object of the invention is to propose a method and a corresponding device for carrying out this method, in which the aforementioned disadvantages are avoided, and in which in particular a high specific density of the film waste is achieved.
  • This object is achieved according to the invention in the method described in the introduction in that the film is fed at the end of the transport device to a winding roller of the film collecting device, the peripheral speed of which corresponds at least to the film transport speed.
  • the pieces of film are now not layered irregularly, but are taken up in a very defined manner and essentially in a smooth state by the winding roller of the film collecting device, where is achieved by a maximum specific weight for the film waste, since there are hardly any voids between the individual wound film layers on the winding roller.
  • the film collecting device can be adapted to and attached to a large number of different film detaching devices.
  • the film coming from the film transport device is fed through a brush roller to the take-up roller, the brush roller being driven in the opposite direction to the take-up roller.
  • the brush fibers are expediently made from a material which is resistant to wear under the conditions of use, such as, for example, Perlon.
  • the thickness of the brush fibers is preferably chosen between 0.05 and 0.25 mm.
  • the film is preferably wetted with a liquid and thereby adhered to the winding roller by means of adhesion. Wetting with liquid will be necessary in particular if the film waste comes from a film detaching device in which the detachment is not carried out or supported by means of a liquid jet. However, additional wetting of the film may also be necessary in the latter film release devices if the degree of wetting of the film when it arrives in the collecting device is no longer sufficient for good adhesion to the winding roller.
  • the wetting of the foils in the area of the brush and winding roller is preferably effected by means of atomizing nozzles.
  • the winding roller is preferably operated as a drag roller of a deflection roller of the film transport device, the winding roller being driven on its circumference by the deflection roller, which, as a rule seen in the transport direction, will be the last deflection roller of the film transport device.
  • the peripheral speed of the brush roller is selected so that it corresponds at least to the film transport speed. This results in a smooth "rubbing" of the film onto the winding roller, which is why an even more regular film winding is produced on the winding core of the winding roller.
  • the detached part of the film is smoothed in the transport direction in the film transport device.
  • the invention further proposes a device for collecting film waste in a film detaching device in which cover or protective films are removed from plate-shaped carriers.
  • the device for collecting film waste according to the prior art for example EP-A 2 32 841, has a film transport device through which the detached film can be fed to a film collecting device in an essentially smooth state.
  • a winding roller the peripheral speed of which is arranged at the end of the transport path for receiving the films amount is at least equal to the transport speed of the film transport device.
  • the winding roller is in contact with its peripheral surface with a deflection roller of the film transport device and is driven over its circumference by the deflection roller. This ensures that the take-up roller, regardless of its degree of loading with film waste, always rotates at a peripheral speed which corresponds to the film transport speed within the film transport system.
  • the winding roller is preferably arranged opposite a brush roller, which can be driven in the same direction as the winding roller.
  • the winding roller and the brush roller can preferably be in contact, so that the brush fibers of the brush roller can additionally smooth the film on the winding core of the winding roller and also ensure that the film has the largest possible contact with.
  • the take-up roller receives, which greatly improves the adhesion of the film by adhesion to the take-up roller.
  • the take-up roller is slidably held with its shaft in slot-shaped guides, the take-up roller with its peripheral surface is always in contact with the deflection roller and the brush roller.
  • the gap-shaped guides can remain open at the top, so that the take-up roller with its shaft can be inserted or removed very easily in the guides, which is particularly advantageous when the fully-loaded take-up roller is automatically changed against an unloaded one.
  • the area within which the geometric axis of rotation of the take-up roller moves as the degree of loading increases is only a plane in the case in which the radius ratio of the deflection roller to the brush roller is equal to one. With other radius ratios, the surface is more or less curved, depending on how much the radius ratio deviates from 1. Typically, however, there will be a radius ratio in the range of 1 to 0.3, i.e. as a rule, the deflection roller will have a smaller radius than the brush roller; in these cases, there is only an insignificant deviation of the surface from a plane in the area covered by the geometric axis of rotation of the winding roller, so that the guides of the shaft of the winding roller can be linear.
  • the brush roller will preferably be drivable with respect to its peripheral speed at up to twice the transport speed of the film transport device.
  • the deflecting roller will preferably have a structured surface.
  • This structured surface reduces the adhesion of the film to the upper deflection roller, which is caused by the wetting of the film.
  • the distance between the geometrical axes of rotation of the deflecting roller and the brush roller can be somewhat reduced in these cases, so that the fibers of the brush roller engage in the surface structure of the deflecting roller and so quasi-lift the film from below the deflecting roller surface, which means deflecting the film and the Safe return transport to the detaching device is prevented.
  • the structuring of the surface of the deflecting roller will preferably consist in the provision of circumferential grooves.
  • a nub structure on the surface of the deflecting roller is also possible.
  • the detached film comes from a dry-working film detaching device, for example those film detaching devices which move under the edge of the film and lift it off, and support the later detaching process, for example by an air jet, it is necessary to wet the film at the latest at the time of their arrival at the end of the film transport device in order to ensure sufficient adhesion of the film to the winding roller.
  • a dry-working film detaching device for example those film detaching devices which move under the edge of the film and lift it off, and support the later detaching process, for example by an air jet
  • An additional wetting of the film is preferably carried out by atomizing nozzles, which can also be provided if the film detaching device itself is already working with liquid jets, since under certain operating conditions of the detaching device the case can occur that the films arrive at the winding roller in a too dry state .
  • the atomizing nozzles are preferably arranged so that their jet direction runs essentially in a radial direction of the winding roller. This also gives a force component that deflects the film towards the winding roller.
  • the brush roller is preferably composed of individual brush segments which are arranged at a distance on a shaft.
  • the nebulizing nozzles are arranged in a compact design at the intervals between the individual brush segments.
  • the device according to the invention preferably comprises film transport devices which have transport belts which are deflected via the deflection roller.
  • O-rings are particularly suitable as transport belts, which are easily available and mountable.
  • film transport devices are preferred in which the transport belts are guided in a fan shape with a greater distance in the transport direction. This ensures that the peeled slides are not only tightened and smoothed in the transport direction, but also in the transverse direction, so that an extremely uniform and smooth winding on the winding roller can be achieved with such a device according to the invention.
  • a sensor is provided for determining the diameter of the winding roller. This sensor can be used to determine the maximum loading level of the take-up roller and to generate a signal which either alerts the operating personnel or automatically causes the fully loaded take-up roller to be replaced by an unloaded one.
  • the winding roller itself preferably consists of a shaft and a winding core held thereon in a rotationally symmetrical manner.
  • the winding core is releasably attached to the shaft so that the winding core can be easily replaced. This then opens up the possibility, for example, of producing the winding core from a cheap plastic tube that can be thrown away together with the film winding, while the winding core shaft is immediately available for the further operation of the device according to the invention.
  • the film collecting device Because of the particularly compact design of the film collecting device according to the invention, it is particularly suitable for installation in film detaching devices which detaches the covering films applied to the top and bottom of the carrier plate in one operation.
  • an angled guidance of the films along their transport path is preferred in the film transport device below the transport plane.
  • the film detaching device 10 shown in a perspective view in FIG. 1 is essentially composed of four different assemblies: an inlet table 12, a first detaching device 14, a second detaching device 16 and a further transport device 18 for carrier plates 20 to be treated in the film detaching device 10.
  • the first and second detachment devices 14, 16 are followed by film transport systems 22, 23 which convey films 25, 26 detached from the carrier plate 20 to a first and a second winding device 28, 29, respectively.
  • the carrier plates 20 to be treated are, for example, printed circuit boards which are coated on both sides with a photoresist, which in turn is covered by a protective film. These circuit boards get into the film detachment device in a process stage in which the photoresist is already exposed. Before the actual development of the photo layer, the protective films must be removed, since the unexposed parts of the photoresist are detached during the development, thereby releasing the copper layer underneath for the subsequent etching process.
  • the winding device according to the invention and the associated method for disposing of the film waste is not limited to the use of the film detaching devices 14 and 16 described here, but can be attached to any constructions for film detachment from carrier plates.
  • the carrier plates 20 provided with the film on the upper and lower sides reach the actual film detaching device 10 via the inlet table 12.
  • the inlet table is formed by conveyor rollers 30 which define a transport plane for the carrier plates 20.
  • drag rollers 32 are arranged parallel to the conveyor rollers, which rest resiliently on the carrier plate 20 and give it a defined guidance.
  • the first detaching device 14 connects to the inlet table 12, in which a counter bearing formed from deflection rollers 34, 35 and rubber bands 36 continues the printed circuit boards 20 on the same transport plane as the inlet table 12.
  • a counter bearing formed from deflection rollers 34, 35 and rubber bands 36 continues the printed circuit boards 20 on the same transport plane as the inlet table 12.
  • the first detachment device 14 Arranged on the side of the transport plane opposite the counter bearing 38 is the first detachment device 14, which essentially consists of a pull-off roller 40, a brush roller 42 and a high-pressure nozzle jet device 44.
  • the pull-off roller 40 is arranged parallel to the deflection roller 34 of the counter bearing 38 and rests resiliently on the upper side of the carrier plate 20.
  • the peeling roller 40 is preferably equipped with a rubber covering which has a Shore hardness A of approximately 40, so that a gentle transport of the printed circuit board 20 is ensured.
  • the brush roller 42 rotates counter to the transport direction of the printed circuit boards 20 and is arranged above the transport plane in such a way that there is a distance between 0 and 4 mm between the printed circuit board surface and the circumference of the brush roller 42.
  • the brush roller itself extends transversely to the transport direction over the entire width of the film detaching device 10 and carries on a shaft 46 along the shaft spaced brush segments 47th
  • the high-pressure nozzle device 44 in which flat-jet high-pressure nozzles 50 are arranged at a distance from a supply line 49, likewise extends over the entire width of the film detaching device 10.
  • the high-pressure nozzle device 44 is preferably arranged such that its nozzles 50 are arranged between the brush segments 47 of the brush roller 42, so that a very compact construction results.
  • the high-pressure nozzles 50 are arranged with respect to their jet direction so that they form an acute angle with the downstream transport plane of the printed circuit boards 20, which is preferably 45 ⁇ 10 °.
  • the high-pressure jet 52 emerging from the high-pressure nozzles 50 strikes the carrier plate 20 in the region of the deflection roller 35 or between the deflection rollers 35 and 34.
  • the protective film 25 of the carrier plate 20 which has been lifted off and detached from the high-pressure nozzles is deflected by the liquid wedge formed by the liquid jet and by the counter-rotating brush roller against the pull-off roller 40 until the film 25 contacts the pull-off roller 40.
  • the pull-off roller 40 also serves as the lower deflection roller for the belt transport system 53, via which the transport belts 56 are guided on free-running rollers.
  • the transport belts 56 are deflected by an upper deflecting roller 58 and run back to the pull-off roller 40.
  • the transport belts 56 are in turn guided on the upper deflecting roller 58 via rollers, which, however, are non-rotatably connected to the shaft of the deflecting roller here, so that the conveyor belts 56 can be driven via the upper deflection roller.
  • the belt transport system 54 is arranged, which together with the belt transport system 53 removes the film from the area of the detachment device 14.
  • the belt transport system 54 is also formed from two deflection rollers 59, 60 and transport belts 61.
  • the transport speed of the transport belts 56 and 61 is identical and is preferably chosen to be somewhat higher than the transport speed of the carrier plates 20, as a result of which the film can be tightened in the transport direction.
  • the transport belts 56, 61 are preferably guided in a fan-shaped manner by the belt transport systems, the distances between the transport belts becoming wider in the transport direction. This makes it possible to exert a tensile force on the film in the transverse direction to the film transport direction, so that the film is also tightened in the transverse direction. This allows the film 25 to be fed to the winding device 28 in a fully tightened state.
  • a sensor 62 is arranged approximately in the middle of the belt transport systems 53, 54 (seen in the transport direction) and responds to the presence of the film 25 in the film transport system 22.
  • the sensor 62 can be an air nozzle, an optical switch or an ultrasonic sensor, for example. This sensor signal can be used to monitor whether or not a protective film has been removed from the carrier plate in a satisfactory manner.
  • the film transport system 22 feeds the film 25 to the winding device 28, which is arranged at its upper end.
  • the winding device 28 essentially consists of a winding roller 64 with a shaft 66 and a winding core 67 as well as a brush roller 68 and atomizing nozzles 70.
  • the winding roller 64 and the brush roller 68 are both arranged parallel to the upper deflection roller 58 of the belt transport system 53.
  • the shaft 66 of the take-up roller 64 is displaceably supported laterally by housing walls 72, 73 in guide slots 74, 75.
  • the guide slots are essentially straight guides and are arranged so that as the radius of the take-up roll increases, i.e. with increasing degree of loading with wound film, there is always a circumferential contact of the three rollers 58, 64 and 68.
  • the guide slots 74, 75 are preferably open at the top, so that the take-up roller can be easily removed when fully loaded and an empty take-up roller can be used again.
  • the degree of loading of the winding roller 64 is monitored by a sensor, from which a signal for an automatic replacement of the winding roller 64 can then be derived.
  • a signal for information can be obtained from this sensor (not shown in the figures) deration of the operator, who then exchanges the fully loaded take-up roller 64 for an unloaded.
  • the brush roller 68 is essentially constructed like the brush roller 42 of the detaching device 14, ie it essentially consists of a shaft 69 on which the brush segments 71 are arranged at a distance.
  • the atomizing nozzles 70 can then be arranged between these brush segments, which results in a particularly compact construction of the winding device.
  • the atomizing nozzles 70 are shown arranged above the brush roller 68 in FIG. 2. However, it is essential in both cases that the jet of the atomizing nozzles extends approximately radially to the winding roller 64, so that the deflection of the film 25 by the brush roller 68 is supplemented and strengthened by the jet of the atomizing nozzles 70.
  • FIG. 7 shows the structure of the take-up roller in detail, with conical holding parts 76 being placed on the shaft 66 at both ends, the tapered part of which points towards the shaft center.
  • a tube 78 is held as a winding core concentrically to the axis of rotation of the winding roller 64, which can be achieved particularly easily by the taper of the holding parts.
  • One of the conical holding parts 76 is preferably fixed on the shaft, while the other is slidably mounted.
  • the movable holding part are removed and the winding core 78 are removed with the wound waste film.
  • the winding core 78 will preferably be formed from an inexpensive plastic tube, so that the winding core 78 together with the removed and wound film can be thrown away.
  • To make the take-up roller 64 ready for operation again it is only necessary to place a new plastic tube or winding core 78 on the shaft 66 of the take-up roller 64 and to push the second holding part 76 back onto the shaft end. Thereafter, the take-up roller 64 can be reinserted into the guide slots 74, 75.
  • FIG. 8 schematically shows the orientation of the upper deflecting roller 58 of the belt transport system 53, the brush roller 68 and the winding roller 64.
  • the radii of the deflection roller 58 and the brush roller 68 a and b remain constant during the operation of the film detaching device 10.
  • the radius c of the take-up roller 64 varies.
  • the guide slots 74, 75 are now arranged so that the geometric axis of rotation of the take-up roller 64 moves on a surface which is approximately a plane, which ensures that the peripheral contact of the take-up roller 64 with the Rollers 58 and 68 is given during the entire operating period.
  • the take-up roller 64 itself does not have its own drive, but is operated as a drag roller to the upper deflection roller 58. This ensures that the peripheral speed of the Winding roller 64 is always the same as the transport speed of the film transport system 22, which is determined by the peripheral speed of the upper deflection roller 58 of the film transport system 22.
  • the upper deflecting roller 58 of the belt transport system 53 is equipped with a high-pressure jet detachment with a certain structure and is not smooth, especially when the winding device is used in film detaching devices.
  • This has the advantage that the adhesion of the wetted film to the upper deflection roller 58 is reduced, since the structured roller provides a smaller surface area for the adhesion of the film.
  • it is advisable, but not absolutely necessary, to give the deflection roller a cruciate ligament structure according to FIG. 5 or to equip it with a transverse and longitudinal groove structure according to FIG. 6.
  • a nub structure on the surface of the deflecting roller 58 is also favorable.
  • the second detachment device 16 is connected to the first detachment device 14 in the transport direction, this time being arranged below the transport plane of the printed circuit boards 20.
  • the structure of the second detachment device and the associated film transport system together with the also associated winding device 29 is the same as that of the first detachment device with film transport system 22 and winding device 28.
  • the mirror-image arrangement results in the necessity of arranging a counterbearing 80 above the transport plane, in the area in which the high-pressure jet of the high-pressure nozzles hits the printed circuit board 20.
  • the construction of the counter bearing 80 is essentially identical to that of the counter bearing 38.
  • the actual detaching device 16 is constructed identically to the first detaching device 14, so that reference can be made to the description there. However, there are differences in the film transport system 23, which transports the detached film approximately vertically downward from the area of the film detaching device 16.
  • the film transport system 23 is constructed in a similar manner to the film transport system 22 from belt transport systems 82, 83, 84, however the belt transport system 84 is arranged approximately at right angles to the belt transport systems 82, 83, as a result of which the film is also approximately at a right angle from the is deflected by the belt transport systems 82, 83 formed transport plane for the film.
  • a winding device 29 is arranged in a manner similar to the transport system 22, which in turn essentially consists of a winding roller 85, a brush roller 86 and atomizing nozzles 88.
  • deflectors are preferably arranged at every point at which the film is transferred from one transport device or one means of transport to another, in particular also in the case of deflections, which prevent the film from moving around one of the, for example Brush rollers winds or is guided in a circle by the belt transport systems.
  • the transport device 18 then follows downstream of the second detachment device and feeds the printed circuit board 20, which has now been freed from the protective film on both sides, to the next processing process.
  • the printed circuit boards 20 are individually fed into the actual detaching device 14 via the entry table 12, the leading edge of the printed circuit board being detected in the entry area via a sensor (not shown).
  • the high-pressure spray device 44 with the flat-jet nozzles is switched on and these lift the high-pressure jets off the front edge of the film 25 from the printed circuit board 20 , whereby a liquid wedge forms between the film 25 and the printed circuit board 20, which moves further upstream under the influence of the high pressure jet 52 and thereby further detaches the film 25 from the printed circuit board 20.
  • the replacement process is through the Brush roller 42 is supported, which is arranged circumferentially just above the surface of the printed circuit board 20, on the one hand not to cause damage to the now unprotected photoresist layer, and on the other hand to be able to grasp the beginning of the film 25 of the film 25, which has already begun to detach, and to steer it in the direction of the pull-off roller 40 .
  • the high pressure spraying is started after a short time, i.e. after a few seconds, are already sufficient to ensure that the front edge of the cover film is lifted off and switched to low pressure, since in the subsequent detachment process a liquid pressure of 2 to 3 bar is generally sufficient to ensure the detachment process of the film 25 from the printed circuit board 20 .
  • the brush roller 40 places the foil 25 around the peeling roller 40, the moisture present and the wetting of the foil 25 causing the foil to adhere to the peeling roller 40, so that the peeling roller, which preferably rests resiliently on the circuit board surface, also causes the foil to be removed 25 supported by the circuit board 20 from this moment on.
  • the peeling point of the film now lies almost exactly in the plane in which the pull-off roller 40 contacts the surface of the printed circuit board 20. Said liquid wedge still forms between the film 25 and the circuit board surface.
  • a splash plate 94 is mounted below the detachment device 14 and above the take-up device 29 and directs the majority of the liquid emerging from the nozzles 50 directly to the device drain.
  • the stripping roller is preferably operated at the same peripheral speed as the transport speed of the printed circuit boards.
  • the circumferential speed of the brush roller which is driven in the opposite direction to the transport direction, will be up to twice as fast in magnitude as the transport speed of the printed circuit boards themselves, so as to smooth and tighten the film running over the pull-off roller.
  • the film 25 is then fed between the belt transport systems 53, 54, the transport speed of which is again preferably greater than the transport speed of the printed circuit boards 2u, but must be at least as great as the peripheral speed of the brush roller 42, the winding roller 64. Due to the increasing transport speed, a tensile force is exerted on the film in the transport direction, so that the film without folds across the transport direction arrives at the take-up roller 64. In the longitudinal direction, wrinkling can largely be prevented or eliminated by forming the belt transport systems 53, 54 in such a way that the transport belts 56, 61 diverge fan-shaped, seen in the transport direction, so that tensile forces are exerted on the film transversely to the transport direction. These precautions ensure that the film is fed to the winding device 28 in an absolutely smooth state, so that there is a very uniform winding on the winding roller 64.
  • the liquid supply to the nozzles 50 is completely shut off, so that as little liquid as possible is used when the films are detached.
  • the film passes the sensor 62, which signals the control of the entire system that the detachment process of the protective film 25 on the top of the circuit board 2u has been carried out satisfactorily.
  • the brush roller 68 redirects the film 25 arriving at the upper end of the film transport system 22 to the take-up roller 64.
  • the brush roller 68 is in turn operated at a somewhat higher peripheral speed than the film transport speed in the film transport system 22, so that the brush roller 68 drives the film 25 on the take-up roller 64.
  • the take-up roller 64 in the guide 74, 75 will deflect obliquely upwards, but the inclination of the guide 74, 75 is selected so that there is always contact between the three rollers 58, 64, 68, so that the Function of the respective rollers is ensured during the entire process (see. In particular FIGS. 3 and 4).
  • FIG. 8 schematically shows the arrangement of the rollers 58, 68, 64 with their radii a, b and c. shown.
  • the guide 74, 75 for the winding roller 64 with its variable radius c is inclined against the plane in which the geometric axes of rotation of the deflection roller 58 and the brush roller 68 are such that the distance between the geometric axis of rotation of the winding roller and the deflection roller axis is always equal to a + c and the corresponding distance to the brush roller is always b + c.
  • the geometrical axis of rotation of the winding roller 64 does not move on a flat surface, but with the radius ratio a to b shown in FIG.
  • the degree of loading of the take-up roller 64 can be monitored by another sensor (not shown) in order to derive a signal therefrom which either causes the operator to replace the fully loaded take-up roller 64 with an unloaded one or to activate an automatic exchange mechanism.
  • the same process also takes place below the transport plane of the printed circuit boards 12.
  • the front edge of the film 26 is lifted off the high-pressure nozzles and fed to the film transport system 23 by the corresponding brush roller.
  • the film After deflection by the belt conveyor system 84, the film in turn arrives at a winding device, here the winding device 29.
  • a sensor 92 is arranged which, analogous to the sensor 62, responds to the presence of a film and its signal to the control the overall system is forwarded.
  • the evaluation of the signals from the two sensors 62 and 92 enables control of the correct treatment, ie the complete removal of the protective films on the top and bottom of the printed circuit board 20, so that such boards are removed from the further development process can be kept away where the cover films have not been removed correctly.
  • the signals from the sensors 62 and 92 can be combined to form a clocking signal which activates a clocking or discharge device which is not shown in the figures.
  • a clocking device can be used to clock out and remove such printed circuit boards 20 from the following production process in which the foils have not been removed properly.
  • the entire process of removing the film, including the control of the printed circuit boards 20, can, as shown, be carried out fully automatically, so that manual intervention is not necessary, and even incomplete removal of cover films means no production interruption.
  • the take-up device according to the invention By using the take-up device according to the invention for the disposal of the waste film, it is ideally possible to collect and accommodate the falling films in the smallest space, so that large batches of carrier plates can be treated without changing the "collecting container".
  • the winding device according to the invention in particular also in combination with the detaching device described above, permits production speeds of up to 5 m per minute for the printed circuit boards 20.
  • the film detaching device uses a finally, the winding device according to the invention essentially uses plastic or stainless steel in the manufacture of the individual parts, so that it is particularly easy to maintain.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP19890104272 1988-03-10 1989-03-10 Procédé et dispositif d'accumulation de feuilles détachées provenant d'un dispositif de séparation de feuilles Withdrawn EP0332207A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883807953 DE3807953A1 (de) 1988-03-10 1988-03-10 Verfahren und vorrichtung zum sammeln von folienabfaellen aus folienabloesevorrichtungen
DE3807953 1988-03-10

Publications (2)

Publication Number Publication Date
EP0332207A2 true EP0332207A2 (fr) 1989-09-13
EP0332207A3 EP0332207A3 (fr) 1991-01-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890104272 Withdrawn EP0332207A3 (fr) 1988-03-10 1989-03-10 Procédé et dispositif d'accumulation de feuilles détachées provenant d'un dispositif de séparation de feuilles

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Country Link
EP (1) EP0332207A3 (fr)
DE (1) DE3807953A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635445A1 (fr) * 1993-07-23 1995-01-25 Knaus, Dennis A. Méthode et appareil pour enbobiner

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112676663A (zh) * 2021-01-24 2021-04-20 杨亚昌 一种高加工精度电火花切割机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035114C2 (de) * 1980-09-17 1982-11-25 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Herstellen von Schuppenbandrollen aus geschuppt abgelegten flachliegenden Säcken, Beuteln oder ähnlichen flachen Werkstücken
DE2840915A1 (de) * 1978-09-20 1980-03-27 Windmoeller & Hoelscher Vorrichtung zum bilden von stapeln aus flachen werkstuecken aus kunststoffolie mit einer elektrostatisch aufgeladenen stapeltrommel
EP0114166A1 (fr) * 1983-01-21 1984-08-01 Frank Ellner Dispositif pour étendre et guider une bande continue
DE3339723C2 (de) * 1983-11-03 1987-01-15 Löhr & Herrmann GmbH, 7531 Neuhausen Verfahren und Vorrichtung zum Ablösen der Schutzfolie von mit Photoresist laminierten Leiterplatten
DE3344219C1 (de) * 1983-12-07 1985-06-20 SKF GmbH, 8720 Schweinfurt Verfahren zum Aufwickeln

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635445A1 (fr) * 1993-07-23 1995-01-25 Knaus, Dennis A. Méthode et appareil pour enbobiner
US5556052A (en) * 1993-07-23 1996-09-17 Knaus; Dennis A. Method and apparatus for winding
US5842660A (en) * 1993-07-23 1998-12-01 Knaus; Dennis A. Method and apparatus for winding

Also Published As

Publication number Publication date
DE3807953A1 (de) 1989-09-28
EP0332207A3 (fr) 1991-01-16

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